Many over-the-counter vitamin D supplements range from 25 to 125 mcg (1,000 to 5,000 IU). You shouldn't take more than 100 mcg (4,000 IU) of vitamin D in a day unless a doctor recommends you do so ...
One viral TikTok video called for taking 500 milligrams (mg) of magnesium and 125 micrograms (mcg) of vitamin D. The dosage recommended in the video is higher than the recognized safe limits and ...